Step 1:

You must create a character to animate and it must be a cycle animate

You can use any character for this tutorial

I m use a Butterflies for this project and animate it in 23 frame

Remember each peace of character must be freeze transform, delete the histories and group them together

Step 2:

Now duplicate your character in each frame

Step 3:

In the dynamic menu go to particle tool and create particles in your scene

Step 4:

Now select all duplicate character in your scene and in the particle menu go to instancer option

Reset menu and set the settings

Now click the create button

Hide your duplicate character

Step 5:

Select particle and in the attribute editor => add dynamic attribute => click on general button

Set the setting

Add the attribute

Now go to Per Particle (Array) Attribute

Right click on (random_fly) and hit create expression

particleShape1.rando_fly = rand(23);

Hit the create button

Now go to the instancer tab in attribute editor

Step 7:

Select particles and bind a uniform field set the magnitude 50 and use a turbulence field and set the magnitude 200 or any value that you want

now play the timeline

scene file instancer.zip

Thank you